Typographical casting machine



May 3, 1955 L. ROSSE'ITO TYPOGRAPHICAL CASTING MACHINE Filed Aug. 29,1952 5 Sheets-Sheet 1 Q INVENTOR ygwM L'wqAWArron/wfi May 3, 1955 L.ROSSETTO TYPOGRAPHICAL CASTING MACHINE 5 Sheets-Sheet 2 Filed Aug. 29.1952 Z /A V ENTOR I W ATTORNEYS May 3," I955 L. RQSSE'ITO TYPOGRAPHICALCASTING MACHINE Fi led Aug. 29, 1952 5 Sheets-Sheet 3 NVE/VTOR A 44WATTORNEVS May 3, 1955 L. RossETro TYPOGRAPHICAL CASTING MACHINE 5She'ets-Sheet 4 Filed Aug. 29. 1952 INVENTOR J flvwr'n non/m3 May 3,1955 ROSSETTO TYPOGRAPHICAL CASTING MACHINE 5 Sheets-Sheet 5 Filed Aug.29, 1952 2 INVEN ran er MMWA Tram/Eng distribution.

United States Patent TYPOGRAPHICAL CASTING MACHINE Louis Rossetto, KingsPoint, N. Y., assignor to Mergenthaler Linotype Company, a corporationof New York Application August 29, 1952, Serial No. 307,132

26 Claims. (Cl. 199-50) This invention relates to quadding and centeringdevices for typographical casting machines and more particularly todevices of the type disclosed in the Frolander Patent No. 1,971,400, theHilpman Patent No. 2,255,254, and the Turner application Serial No.80,887, filed March 11, 1949, now U. S. Patent 2,639,027. in thesepatents and application, the quadding and centering devices are designedto be built in new machines and hence are not available to the tradeexcept by the purchase of new machines. There is a growing demand forquadding and centering devices which may be applied as attachments toold or existing machines, and the present invention is intendedprimarily to meet that demand. However, many of the features of theinstant device are equally applicable to devices of the built-invariety.

The exact construction and operation of the present device will best beunderstood from the detailed description to follow.

Referring to the drawings:

Fig. 1 is a front elevation of the casting portion of a Linotype machinewith the present invention applied thereto;

Fig. 2 is a side elevation of the improved parts;

Fig. 3 is a perspective view showing the details of the connectionbetween the quadding lever and the link leading to the right hand jaw;

Fig. 4 is a section taken along the line 44 in Fig. 1, showing in sideelevation the locking device for one of the pawl carrying levers whichoperate the jaw control rod;

Fig. 5 is a rear perspective view showing the improved bankingarrangement between the left hand jaw and the wedge block;

Fig. 6 is a top plan view of the parts shown in Fig. 5;

Fig. 7 is an isometric view of part of the jaw closing mechanism;

Fig. 8 is a sectional view taken along the line 8-8 of Fig. 1; and

Figs. 9, and 11 are top cross-section views of the control rod, showingthe different settings thereof for quadding and centering.

A line of matrices is composed in the usual manner and transferred into'a vertically movable line transporter or first elevator 2 slidablymounted in the vise frame 3. Upon receiving the line, the first elevatorimmediately descends to position it between a left hand jaw 4 and aright hand jaw 5 and in front of a slotted mold, which latter thenadvances from the rear into contact with the line and the two clampingjaws for the slug casting operation, the line prior to the castingoperation being aligned with the mold and properly justified when themachine is operating under the usual conditions. After the slug has beencast, the mold is carried from its horizontal casting position to itsvertical slug ejecting position by a three-quarter turn of a mold disk 6and the first elevator in the meantime raised to the upper transferlevel where the composed line is shifted therefrom for The firstelevator then is lowered and finally 2,707,549 Patented May 3, 1955comes to rest in its original or line receiving position just before themachine cycle is completed.

The line clamping jaws 4 and 5 are operable to cooperate with lines ofless than full length so as to cast slugs with blank spaces at eitherend, as for quadding or at both ends for centering. For this purpose,the two jaws 4 and 5 are movable toward and from each other by avertically movable rod 7 which may be connected at its upper end to therespective jaws through the medium of two similar oppositely disposedbell crank levers 8 and 9 pivotally mounted in the casting 10. Thecasting 10 and, for that matter, most of the operative parts of thepresent quadding and centering device, are built into a housing 11adapted to be attached to the left-hand side of the vise frame 3. Thelonger arm of the lever 9 is connected by means of a long horizontallydisposed link 12 to the right hand jaw 5, while the longer arm of thelever 8 is connected by means of another long horizontally disposed link13 to the left hand vise jaw 4. The left hand vise jaw 4 is capable ofadjustment with respect to the link 13 by means of a rotatable settingdevice 14 (Fig. 1), to provide for the proper handling of composed linesof different lengths in the normal or regular operation of the machine.

In providing for the connection and disconnection of the rod 7 with andfrom the jaws 4 and 5, it is equipped at its upper end with an annularlygrooved collar 15 formed for engagement with diametrically opposed pins16 and 17 protruding inwardly from the extremities of the shorter armsof the jaw actuating levers 8 and 9, respectively. The under side of thecollar 15 is adapted to bank against the top surface of the casting 10when the rod is in its lowermost position of rest. The rod 7 is mountedto slide in suitable bearings in the upper casting 10 and in a lowercasting 18, and just above the latter is provided with a cylindricalrack 19 formed with a plurality of circular teeth or serrations 20. Inthe present instance, the rack 19 is made integrally with the rod 7, butit could, of course, be made as a separate part and keyed or otherwisesecured to the'rod.

As heretofore stated, the bell crank levers 8 and 9 can be selectivelyconnected to the vertical rod 7 to elfect the movement of either or bothof the jaws 4 and 5. The inward movement of the jaws during a quaddingor centering operation is effected by the upward movement of the rod 7,whereas the outward or return movement of the jaws is eflected by thedownward movement of the rod. Since the justification of composed linesin regular operation (which involves no quadding or centering) takesplace during each machine cycle immediately after the line has beenpositioned between the vise jaws, a member of the justifying mechanismis used advantageously, in the present instance, to eifect the upwardmovement of the rod 7. Generally speaking, there are two separateoperations included in the justification of a composed line, the firstoperation involving the upward movement of a long fore-and-aftspring-actuated (so-called second) justification lever 21, and thesecond operation also involving the upward movement of the justificationlever 21 in synchronism with another (so-called first) justificationlever 1. Such justifying mechanism and the operation thereof are wellknown in the art and require no further explanation, except to point outthat the upward movement of the justification lever 21 is accomplishedby a powerful spring under the control of a cam on the main cam shaft ofthe machine. It should, therefore, be clear that during each completemachine cycle, the lever 21 operates twice, and in accordance with thepresent invention, the first operation is utilized to close the jaws onthe line and the second operation is utilized to supply an additional orline squeeze pressure during quadding or centering.

As always, the justification lever 21 has a forked or bifurcated frontend portion presenting two arms, one arm 21 serving to operate thejustification bar 22 through a rod 22 and the other arm 21* serving tocontrol a spring-actuated rod 24 which operates, in a well known manner,a wedge-shaped clamping member 23 (Fig. for the left hand jaw. The arm21* also has connected to it an extension casting 25 presenting a lowercam surface 25 and a top cam surface 25 (Fig. 2). The cam surface 25 isadapted to engage an antifriction roller carried by a lever 26 pivotallymounted at 26 in the casting 1.3 and to thereby control its operation;while the cam surface 25 is adapted to engage another antifrictionroller carried by a U-shaped lever 27,1ikewise pivotally mounted in thecasting 18 at 27 (see also Fig. 8). ways urged upwardly by a long butnot too powerful tension spring 28, but when the justification lever 21is held in its normal or downward position of rest by its control cam,the cam surface 25 maintains the lever in a downward or inoperativeposition against the tension of the spring.

The levers 26 and 27 control the upward jaw closing and pressureapplying movements of the vertical rod 7, and they do so through themedium of a series of pawls The lever 26 is al- 29, 30, 31 cooperatingwith the rack 19. The operation I? of the pawl 29 is controlled from thelever 26 through motion multiplying links 29 and 29", the former linkbeing pivotally connected at one end to the lower end of the pawl 29 andpivotally mounted at the other end in the casting 18, and the latterlink being pivotally connected I to the lever 26 and the link 29 neartheir pivots. A spring 29 normally serves to urge the pawl 29 intoengagement with the rack 19 but, in its normal position of rest, thepawl is held out of engagement therewith by a guard plate 32 attached atits lower end to the casting 18.

As best shown in Fig. 7, the pawl 31 is set into a hollowed out portionof the pawl 30, and both are pivotally connected to the U-shaped lever27 adjacent its pivot 27 so as to be moved bodily upward by the rise ofthe lever 27. More specifically, the pawl 31 is fast to a short shaft 33journaled in the arms of the lever 27, and the pawl is pivotally mountedon this same shaft. A spur 34 on the shaft 33, actuated by a spring 34*,serves to rock the pawl 31 into engagement with the rack 19 but the spuris provided with a set screw 34* which, in the normal position of restof the parts, is adapted to seat on a ledge 18 of the casting 18 andprevent such engagement. Similarly, a spur 35 protruding from the pawl30, and actuated by a spring 35 serves to rock the pawl 30 intoengagement with the rack 19 but this second spur is also provided with aset screw 35 which, in the normal position of rest of the parts, seatsupon another ledge 18" of the casting 18 and prevents such engagement.

Pivotally mounted on a downward extension itl" of the casting 10 (Fig.l) is a three arm lever 40, one arm thereof garrying an anti-frictionroller adapted to bear against the upper surface of the rack 1.9. Thearm 40 thereof, more or less diametrically opposite the arm 40, isconnected to a light spring 41 which serves to keep the roller incontact with the rack. The arm 4-9 is also connected, by means of avertical link 42, to a dash pot 43.

The operation of the jaw closing rod 7 will now be clear: with a line ofmatrices in position for a quadding or centering operation, thecam-controlled spring-actuated lever 21 is permitted to rise, said risecorresponding to the upward movement for first justification in regularmachine operation. As the lever 21 begins to ascend, the lever 26, underthe tension of the spring 28, is also caused to rise, lifting the pawl29. As soon as the pawl tooth passes above the upper end of the guardplate 32, the pawl 29 comes into engagement with the rack 19 and servesto effect the closing of the jaw or jaws against the composed line, thedash pot 43 regulating the speed with which this sure that can beexerted on the line by the action of the pawl 29 at this time isdetermined by the residual tension of the spring 28 after it hascompleted the jaw closing action. The further upward movement of thelever 21 brings the upper surface 2S into contact with the lever 27, andas the lever 27 moves about its pivot, it imparts an upward movement tothe pawls 30 and 31 mounted thereon. These pawls come into engagementwith the rack 19 the instant the respective spurs 35 and 34 unseat fromthe ledges 18 and 18 The full pressure of the justification spring isthereupon brought into action against the composed line to supplementthe pressure of the spring 28.

The reason for employing two separate pawls 30 and 31 for the sameoperation should perhaps be stated. Ideally, the distances between thesuccessive teeth or serrations 20 of the rack 19 should be very slightso that as much of the upward movement of the lever 27 as is possiblecan be utilized for the purpose of exerting pressure on the composedline. Actually, however, a compromise is necessary so that theindividual teeth 20 may be of suffieient strength to insure againststripping. By employing two pawls, spaced in staggered relation to eachother so that one will engage one of the rack teeth 20 before the other,it is possible to achieve adequate pressure on the line before too muchof the movement of the lever 27 is lost.

After the above described operation, the long fore-andaft justificationlever 21 is forced downwardly by the control cam on the main shaftpreparatory to the second justification. The jaw closing rod 7, however,and of course the rack 19, although relieving the force initiallyexerted on the composed line, remain in their upward or operatedposition due to the balance of the system of levers and the weight ofthe jaws. Now, once again the lever 21 is permitted to rise, this secondrise corresponding to the second and final justifieation in regularmachine operation, and the pawls 29, 30 and 31 are operated in the samemanner above described. At the beginning of this second operation,however, the vertical rod 7 and the rack 19 are already in raisedposition, as just explained, so that the full pressure of the fullytensioned spring 28 as well as the full pressure of the justificationspring are brought into play against the composed line before casting.

After the casting operation, the justification lever 21 is depressedagain by the further rotation of its control cam and the mold disk 6 isrotated through a three-quarter turn to the slug ejecting position;meanwhile, as before explained, the first elevator 2 lifts the matricesto the transfer channel for distribution. The present invention makesuse of the ascent of the first elevator to restore the jaws to theiroriginal position of maximum separation. Toward this end (see Fig. l),the first elevator carries a cam plate 44 having an inclined surface 44and a vertical surface 44*, which surfaces, during the ascent, engage anantifriction roller on the lower extremity of a lever 45. The lever 45is pivotally connected to another lever 46, by means of a hinge pin 47,which pin is mounted in the vice frame 3 of the machine. A take-upspring 48 is positioned between the two longer arms of the levers 45 and46, and an adjustable screw 49, which serves to keep the spring 48 undercompression and to regulate the amount of compression, is positionedbetween the two shorter arms. At its lower end, the lever 46 ispivotally connected to the free end of the arm 40 of the beforeaetiontakes place. It is evident that the maximum pres- '1' 3 mentionedthree-arm lever 49 by means of a long link 50. It can be seen at oncethat when the first elevator 2 makes its ascent, the inclined surface 44will quickly move the link 50 in a leftward direction, imparting aclockwise rotation to the lever 40, and the arm 40 will thereby bedepressed to effect the downward movement of the vertical rod 7; anyresulting shock caused by such return action will be absorbed by thespring 48 and the dash pot 43.

As before stated, the vertical rod 7 is equipped at its volves noquadding or centering), the vertical rod is not required to function,hence (as shown in Fig. 8) the teeth or serrations 20 of the rack 19 arecut away at diametrically opposite sides to leave vertical grooveswhich, by rotation of the rod, may be brought into line with the pawls29, 30 and 31 to render them completely ineffective. When the right handjaw is to be connected alone to the actuating rod 7, the collar 15, by apartial rotation of the rod, is set in the position shown in Fig. 9 soas to locate one of its two notches 15* in line with the connecting pin16 for the left hand jaw but both out a of line with the pin 17 for theright hand jaw. When both jaws are to be connected to the rod 7 forcentering. the collar 15, by another partial rotation of the rod, willlocate its two notches out of line with both pins 16 and 17, as shown inFig. 10. Finally, when the left hand jaw is to be connected to the rod 7for left jaw quadding, the collar 15, by a further rotation of the rod,is set in the position shown in Fig. 11' to bring one of its notches inline with the pin 17 for the right hand jaw but both out of line withthe pin 16 for the left hand .jaw. In order to prevent accidentalrotation of the rod 7 during its upward and downward movements, thelower segment of the collar 15 is also provided with three smallernotches 15 one of which is adapted, in each of the three positions forquadding or centering, to be aligned with a guide formed in the casting10.

The means employed to set the collar in its different angular positions,in the manner above stated, include pulleys 52 and 53 connected by aflexible band or wire 54 (as shown in Fig. 1) and a guide roller 55therefor. The pulley 52 is mounted in the casting 10 and keyed to therod 7. The pulley 53 is mounted on the right-hand side of the housing 11and is adapted to be rotated by a hand lever 56 through a long shaft 57and a gear set 58. The hand lever 56 is equipped with an indicator to beused in association with a'dial 60 to aid the operator in making thevarious settings of the control rod 7.

The connecting link 13 is pivoted directly at one end to the operatinglever 8 and directly at its other end to the sliding carriage 4 (laterto be described) for the left hand jaw 4, whereas the link 12, whilepivoted directly at one end to the right hand jaw 5, is pivoted at itsother end to the operating lever 9 through the medium of an eccentric 9attached to a pivot pin 9 journaled in the upper end of the lever 9 androtatable within a circular sleeve 12' formed on the end of-the link 12(see Figs. 1, 2 and 3). The pivot pin 9 has fast thereto a crank arm 9connected at its free end to the upper end of a relatively long link 9pivoted atits lower end at 9* to the housing 11. According to thisarrangement, when the lever 9 is rocked in a counterclockwise directionin effecting a quadding or centering movement of the right hand jaw 5,the crank arm 9 will be moved upwardly to rotate the eccentric 9' in acounterclockwise direction; whereas, when the lever is rocked in aclockwise direction'in restoring the right hand jaw to its originalposition of rest, the crank arm will be moved downwardly to rotate theeccentric in a clockwise direction. The purpose and elfect of thisarrangement are to equalize thelinear movements of the two vise jaws inperforming a line centering operation. The point is that, if the twolinks were both pivoted directly to their respective operating levers,the extent of linear movement of the vise jaws would vary somewhat, dueto the difference in length of the two links and to the fact that one(the right jaw link 12) is a pushing element while the other (the leftjaw link 13) is a pulling element during a centering operation. Theeccentric 9 is so proportioned that it will eliminate this variation inlinear movement of the two jaws notwithstanding the conditions stated. Asimilar result could be accomplished by making the links rigid with thevise jaws or their bearing blocks and forming them with straightvertical slots to receive the pivot pins of the operating levers.

As above indicated, the link 13 is not pivoted directly to the left handjaw 4 but, rather, to a sliding carriage 4 which in turn is connected tothe left hand jaw by means of a rotatable screw rod 14 which is operatedby the jaw setting device 14 before referred to. At its left end, thescrew rod 14 has a plain bearing portion journaled in the carriage 4 andat its other end is telescopically connected to a rotatable sleevepassing through a bore in the right hand jaw and connected for rotationto the handle 14, all as more fully described in the Brandenburg PatentNo. 2,247,986.

When the sliding carriage 4 occupies its fully retracted position, asshown in Figs. 5 and 6, either for a regular machine operation or forquadding with the right hand jaw, the projecting head portion 14 of thescrew rod 14 will bank against a cross-head 4 on a slide 4, which latteris attached to the vise frame 3 by a pair of pins and slots 4 for alimited movement lengthwise of the left hand jaw. The cross-head 4 inturn banks against the customary plunger 23 which is actuated in theusual way from the wedge bar 23 through the cooperating sliding block 23As is well understood in the art, the wedge bar 23 is raised by thejustification lever 21 through the rod 24 during line justification inorder to set the left hand jaw 4 (when the machine is conditioned for aregular operation or for quadding with the right hand jaw) in its properposition, that is to say, with its matrix engaging face in accuratealignment with the end wall of the mold slot. Ordinarily, or when themachine is not equipped with a quadding and centering attachment, theleft hand jaw will bank directly against the plunger 23, which, as willbe noted from Fig. 6, is substantially in line with the jaw. However, inthe instant construction, due to the use of the sliding carriage 4 andits connection with the left hand jaw through the adjusting screw rod 14the sliding cross-head 4 is needed to transmit the thrust of the plunger2. to the sliding carriage and thence to the jaw. The cross-head 4 andits carrying slide 4 are made sturdy or massive enough to perform theirrequired function notwithstanding the offset or out-ofline relation ofthe plunger 23 and the head portion 14" of the screw rod 14 In otherwords, the left hand jaw will be moved precisely the same distance,through the sliding cross-head interponent, as it would if it bankeddirectly against the plunger 23*, thus avoiding any bleeding which mightoccur if the jaw failed to move the required distance for accuratealignment with the end wall of the mold slot. And it may be noted herethat the presence of the cross-head interponent does not in any wayinterfere with the quadding and centering operations or with the partsasssociated therewith.

When the machine is conditioned. for a quadding or centering operation(see Fig. l), the justification bar 22 is locked out of action by meansof a lever 70 pivoted at its upper end, as at 71, to the viseframe 3 andformed at its lower end with a latch 72 for engagement with a sleeve 73secured to the right hand rod 22 which is operated by the firstjustification lever 1, before referred to. This locking of the lever 1does not prevent the second justification lever 21 from operating thecontrol rod 7 in the manner before described, since there is ample lostmotion between the lever 21 and the sleeve 73 on the left hand rod 22.The lever 70 is rocked to and from its locking position by a cam wheel74 attached to the left end of the long shaft 57, before alluded to,this cam wheel having a shoe 75 (see also Fig. 4) for engagement with apin 76 projecting forwardly from a lever 77 pivoted at 78 to asupplemental housing 11 mounted on the right side of the main housing11. At its upper end, the lever 77 is pivotally connected to the lockinglever 7t) by a long link 79; and near its pivot 78, it is formed with ashort arm 80 which is connected to a tension spring 81 anchored at 32 tothe housing 11. The Spring 81 tends normally to hold the lever 70 in itslocking position, as shown in Fig. l, at which time the cam shoe 75 isout of engagement with the pin 76 (see also Fig. 4), but when the shaft57 is rotated by the handle 56 to condition the machine forregularoperation, the shoe 75 will be brought into engagement with the pin 76and rock the lever 77 in a counterclockwise direction, against thetension of the spring 81, and thereby rock the lever '70 to itsunlocking position.

While the control rod 7 is not operated when the machine is conditionedfor regular operation, due to the fact that the rack teeth 20 are cutaway at opposite sides to avoid engagement with the pawls 29, 3t and 31in that position of the control rod, nevertheless the pawls themselveswould still be operated by the justification lever 21, which must ofcourse be actuated during each machine cycle to perform its requiredfunctions. Hence (see Figs. 1 and 4), it is proposed to lock the lever26 and its actuating spring 28 out of action at the time stated, that isto say, whenever the machine is conditioned for regular operation. Tothis end, the lever 77 is connected by means of a horizontal link 83 tothe upper end of a vertical lever 84 intermediately pivoted, as at 85,to the casting 18 and formed at its lower end with a latch 86 forengagement with the leved 26. According to this arrangement, the lockinglever 70 and the locking lever 84 are both controlled from the machineconditioning handle 56. Thus, when the machine is set for quadding orcentering, as in Fig. 1, the locking lever 70 will be active and thelever 84 inactive; whereas when the machine is set for regularoperation, the locking lever 84 will be active and the locking lever 7t)inactive. Hence, the locking lever 84 not only prevents what wouldotherwise be an idle movement of the pawl 29 and the connected partsbut, in addition, it relieves the main cam shaft of the burden ofretensioning the spring 28 during each machine cycle ferred form, butobviously many variations and modifications may be made therein and inits mode of application which will still be comprised within its spirit.It is to be understood, therefore, that the invention is not to belimited to any specific form or embodiment, except insofar as suchlimitations are specified in the appended claims.

This application is a continuation-in-part of application Serial No.183,033, filed September 2, 1950.

What is claimed is:

1. In a typographical casting machine, the combination of a pair of lineclamping jaws movable one toward the other in quadding, a power-operatedmember operable twice in the same direction during each machine cycle,means controlled by said member in its first operation in one directionfor effecting the quadding movement of the jaw and in its secondoperation in the same direction for applying a line squeeze pressure tothe jaw, and additional means actuated by said member in each of itsoperations in the same direction for applying a line squeeze pressure tothe jaw.

2. The combination according to claim 1, wherein each of said meanscomprises a reciprocable pawl which is returned to starting positionafter the first operation of the power-operated member, and a toothedrack connected to the quadding jaw and with which the reciprocable pawlcooperates.

3. In a typographical casting machine, the combination of a pair of lineclamping jaws movable one toward the other in quadding, a power-operatedmember operable twice in the same direction during each machine cycle,means controlled by said member in its first operation in one directionfor effecting the quadding movement of the jaw and in the secondoperation thereof in the same direction for applying a line squeezepressure to the jaw, and

. additional means actuated by said member in each of its operations inthe same direction for applying a line squeeze pressure to the jaw inits quadding position.

4. In a typographical casting machine, the combination of a pair of lineclamping jaws movable one toward the other in quadding, a verticallymovable rod connectable to the jaw for effecting its quadding movement,a toothed rack on said rod, said rack presenting a series of teetharranged at different levels, a reciprocable pawl to cooperate with saidrack, a power-operated member operable twice in the same direction ineach machine cycle, and a spring-actuated lever system controlled bysaid member in its first operation in one direction for actuating thepawl to efiect the jaw closing-movement of the rod and in the secondoperation of said member in the same direction for actuating the pawl toapply a line squeeze pressure to the rod in the quadding position of thejaw.

5. The combination according to claim 4, wherein the reciprocable pawlis returned to its starting position by the power-operated member afterits said first operation while the jaw is left in its quadding positionand whereby said pawl in the said second operation of the power-operatedmember is caused to exert its full line squeezing pressure on the jawclosing rod, and including means distinct from the power-operated memberfor returning the vertically movable rod and the toothed rack thereon totheir original position after a quadding operation.

6. In a typographical casting machine, the combination of a pair of lineclamping jaws movable one toward the other in quadding, a verticallymovable rod connectable to the jaw for effecting its quadding movement,a toothed rack on said rod, said rack presenting a series of teetharranged at different levels, a reciprocable pawl to coopate with saidrack, a power-operated member operable twice in the same direction ineach machine cycle, and a lever system actuated by said member in itsfirst operation in one direction for applying through said pawl a linesqueezing pressure on the jaw closing rod and in the second operationthereof in the same direction for rebuilding through said pawl 21greater line squeezing pressure.

7. The combination according to claim 6, wherein the reciprocable pawlis returned to its starting position after the said first operation ofthe power-operated member while the jaw is left in its quaddingposition, whereby said pawl in the said second operation of said memberis caused to exert its full line squeeze pressure on the jaw closingrod, and including means distinct from the power-operated member forreturning the vertically movable rod and the toothed rack thereon totheir original position after a quadding operation.

8. In a typographical casting machine, the combination of a pair of lineclamping jaws movable one toward the other in quadding, a verticallymovable rod connectable to the jaw for effecting its quadding movement,a toothed rack on said rod, said rack presenting a series of teetharranged at different levels, a reciprocable pawl to cooperate with saidrack, a spring-actuated lever system for operating the pawl to effectthe jaw closing movement of the rod, and means for controlling suchoperation of the lever system.

9. In a typographical casting machine, the combination of a pair of lineclamping jaws movable one toward the.

other in quadding, a vertically movable rod connectable to the jaw foreffecting its quadding movement, a toothed rack on said rod, said rackpresenting a series of teeth arranged at different levels, areciprocable pawl to cooperate with said rack, a power-operated memberoperable twice in the same direction in each machine cycle, and meansactuated by said power-operated member in each of its operations in thesame direction for operating said pawl, to apply a line squeeze pressureon the jaw closing rod.

10. In a typographical casting machine, the combination of a pair ofline clamping jaws movable one toward the other in quadding, avertically moable rod connectable to the jaw for effecting its quaddingand return movements, a toothed rack on said rod, a reciprocable pawl toengage said rack in elfecting the jaw closing movement of the rod, anoperating member for said pawl, means for normally holding the pawl outof engagement with the rack and means released by the initial movementof the operating member for engaging the pawl with the rack.

11. The combination according to claim 10, wherein the means fornormally holding the pawl out of engagement with the rack comprises arelatively stationary guard plate to cooperate with the upper end of thepawl.

12. In a typographical casting machine, the combination of a pair ofline clamping jaws movable one toward the other in quadding, avertically movable rod conneetable to the jaw for effecting its quaddingand return movements, a toothed rack on said rod, a reciprocable pawl toengage said rack in the jaw closed position of the rod to apply a linesqueeze pressure thereto, an operating member for said pawl, means fornormally holding the pawl out of engagement with the rack, and meansreleased by the initial movement of the operating member for engagingthe pawl with the rack.

'13. The combination according to claim 12, wherein the means fornormally holding the pawl out of engagement with the rack comprises aspring biased spur connected to the pawl, and a relatively stationaryledge to cooperate with said spur.

14. In a typographical casting machine, the combination of a pair ofline clamping jaws movable one toward the other in quadding, avertically movable rod connectable to the jaw, a spring for actuatingthe rod in one direction to effect the quadding movement of the jaw, aline transporter, and means controlled by said transporter for actuatingthe rod in the opposite direction to effect the return movement of thejaw, said means comprising two independently mounted levers, a linkconnecting said levers, one located in the zone of action of thetransporter and the other located remote from said zone and in thevicinity of the vertically movable rod, and a cam plate carried by theline transporter to engage one of the levers.

15. In or for a typographical casting machine, a quadding and centeringmechanism comprising, in combination, a pair of upright pivoted leversmovable in opposite directions to each other in centering, acorresponding pair of links connecting the upper ends of the levers totheir respective vise jaws, one link being longer than the other and oneacting as a pull link and the other as a push link in operation, andmeans forming part of the operating connections between the long pulllink and its corresponding pivoted lever to equalize the linearmovements of the two jaws during centering.

16. A combination according to claim 15, wherein the equalizing meanscomprise an eccentric connection of one link with its operating lever,and a device actuated by the pivotal movement of said lever for rotatingthe eccentric, said device being pivoted at one end to a fixed part ofthe machine and pivotally connected at its other end to a crank armfixed to the eccentric shaft.

17. A combination according to claim 8, including means for rotating thetoothed rack into or out of engaging relation to the reciprocable pawlfor quadding or a regular machine operation, and automatic means forlocking the spring-actuated lever system against action during a regularmachine operation.

18. A combination according to claim 8, including means for rotating thetoothed rack into or out of engaging relation to the reciprocable pawlfor quadding or a regular machine operation, and a locking deviceoperated from said rack rotating means to prevent or permit the actionof the spring-actuated lever system, according to the conditioning ofthe machine.

19. A combination according to claim 8, including means for rotating thetoothed rack into or out of engaging relation to the reciprocable pawlfor quadding or a regular machine operation, a justification bar, and alocking device operated from said rack rotating means to prevent orpermit the operation of said bar, according to the conditioning of themachine.

20. A combination according to claim 8, including means for rotating thetoothed rack into or out of engaging relation to the reciprocable pawlfor quadding or a regular machine operation, a locking device operatedfrom said rack rotating means to prevent or permit the action of thespring-actuated lever system according to the conditioning of themachine, a justification bar, and a locking device also operated fromthe rack rotating means to prevent or permit the operation of said baraccording to the conditioning of the machine.

21. In a typographical casting machine equipped with a quadding andcentering mechanism, the combination of a left hand vise jaw, a slidingcarriage for operating the jaw during quadding or centering, a rotatablescrew rod connecting the jaw adjustably to the carriage, a verticallymovable wedge bar, a horizontally slidable block cooperating with thewedge bar, a plunger carried by the slidable block, said plunger beingarranged out of line with the sliding carriage, and means fortransmitting the inward movement of the plunger to the sliding carriage.

22. A combination according to claim 21, wherein the last-mentionedmeans comprise a slidable cross-head banking at one side against theplunger, and a pin projecting from the sliding carriage and bankingagainst the opposite side of the cross-head.

23. In a typographical casting machine, the combination of a pair ofline clamping jaws movable one toward the other quadding, a verticallymovable rod connected to the jaw for effecting its quadding movement, atoothed rack on said rod, a reciprocable pawl to cooperate with saidrack, a lever system connected to the pawl, a spring connected to saidlever system and acting constantly to actuate the pawl for a jawquadding movement, a springactuated cam-controlled justifying leveroperable both upwardly and downwardly twice during each machine cycle,and a cam element carried by the justifying lever and engaged with thelever system, said cam element in the first upward movement of thejustifying lever permitting the tensioned spring to actuate the pawl fora jaw quadding movement and in the first downward move ment of saidlever to restore the pawl to its starting position and re-tension thespring, and said cam element in the second upward movement of thejustifying lever permitting the tensioned spring again to actuate thepawl for a line squeeze pressure on the jaw in its quadding position andin the second downward movement of said lever to restore the pawl againto its starting position and re-tension the spring.

24. The combination according to claim 23, including a secondreciprocable pawl to cooperate with the toothed rack on the verticallymovable rod, a second lever system connected to the pawl, and a secondcam element carried by the justifying lever and engaged with the secondlever system, said cam element in the first upward movement of thejustifying lever actuating the second pawl through the second leversystem to apply a line squeeze pressure on the jaw in its quaddingposition and in the first downward movement of said lever to restore thepawl to its starting position, and said cam element in the second upwardmovement of the justifying lever again actuating the second pawl throughthe second lever system to re-apply a line squeeze pressure on the jawin its quadding position and in the second downward movement of saidlever to restore the second pawl again to its starting position.

25. The combination according to claim 23, wherein the motion of the camelement carried by the justifying lever is substantially multiplied bythe lever system in actuating the reciprocable pawl.

26. The combination according to claim 24, wherein the motion of thesecond cam element carried by the justifying lever is substantiallyreduced by the second lever system in actuating the second reciprocablepawl.

References Cited in the file of this patent UNITED STATES PATENTS678,310 Vinton July 9, 1901 958,530 Pickett May 17, 1910 1,124,180Sperry Jan. 5, 1915 1,958,335 Gilbert May 8, 1934 2,035,078 KingsburyMar. 24, 1936 2,051,804 Albrecht Aug. 25, 1936 2,092,211 Hilpman Sept.7, 1937 2,255,254 Hilpman Sept. 9, 1941

